AD1888 is a AC '97 2.3 compatible audio codec chip launched by Analog Devices, which has 6 DAC channels to achieve 5.1 surround sound effect, supports 90dB dynamic range, adopts 20-bit PCM DAC and supports S/PDIF output.
The AD1888 is an AC’97‑compatible SoundMAX codec featuring six DAC channels for 5.1 surround, 90 dB dynamic range, 20‑bit PCM DACs, and integrated headphone amplifiers. It supports selectable MIC inputs, a PLL for system clocking, and various power‑management modes.
The document includes detailed electrical specifications, absolute maximum ratings, environmental limits, timing diagrams, package dimensions, and ordering guides for both the 48‑lead LQFP and LFCSP versions.
| ADC Resolution | 16 Bits |
|---|---|
| DAC Resolution | 20 Bits |
| Dynamic Range | 90 dB |
| Typical Sample Rate | 48 kHz |
| Analog Power Supply Range | 4.75 V – 5.25 V |
LINE_IN, CD, AUX, and PHONE_IN accept 1 Vrms (2.83 Vp‑p).
The device can operate up to +70 °C ambient temperature.
It is offered in a 48‑lead LQFP (ST‑48) and a 48‑lead LFCSP (CP‑48‑1).
The DAC provides a 20‑bit resolution.